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c64f919f1c
When getting attributes it is sometimes nicer to use Optional<T> some of the time instead of magic values. I tried to cut over to only using the Optional values but it made many of the call sites very messy, so it makes sense the leave in the calls that can return a default value. Otherwise code that looks like this:
uint64_t CallColumn = Die.getAttributeValueAsAddress(DW_AT_call_line, 0);
Has to be turned into:
uint64_t CallColumn = 0;
if (auto CallColumnValue = Die.getAttributeValueAsAddress(DW_AT_call_line))
CallColumn = *CallColumnValue;
The first snippet of code looks much better. But in cases where you want an offset that may or may not be there, the following code looks better:
if (auto StmtOffset = Die.getAttributeValueAsSectionOffset(DW_AT_stmt_list)) {
// Use StmtOffset
}
Differential Revision: https://reviews.llvm.org/D27772
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289731 91177308-0d34-0410-b5e6-96231b3b80d8
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Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.